/* eslint-disable func-names */ /* Validator number >= 0 */ jQuery.validator.addMethod( "number_not_negative", function(value, element) { let val = value; val = val.replace(",", "."); const isNumber = !isNaN(parseFloat(val)) && isFinite(val) && parseFloat(value) >= 0; return this.optional(element) || isNumber; }, "Proszę wpisać poprawną liczbę." ); /* Number not negative validation */ jQuery.validator.addClassRules("js-validation-number-not-negative", { number_not_negative: true, });